.. oven cleaner for a buck..?....I have used it...Sorta OK..Makes the engine smell good though...Sorry...I mean motor...Berkelsnort just breezed in and reminded me that its "motor" now......Oh..the days of steam cleaners...now that got grease off.!!...They left an awful mess though. A pressure washer with at least 3,000 LBs does nicely..Just wear rain gear.. ......